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Q:

Fifth generation computer is also known as

A) Very Large Scale Integration (VLSI)	B) Knowledge information processing system
C) Both A & B	D) None of the above

Answer & Explanation Answer: B) Knowledge information processing system

Explanation:

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Filed Under: Computer
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Q:

An alloy contains gold and silver in the ratio 5 : 8 and another alloy contains gold and silver in the ratio 5 : 3. If equal amount of both the alloys are melted together, then the ratio of gold and silver in the resulting alloy is ?

A) 113/108	B) 105/103
C) 108/115	D) 103/113

Answer & Explanation Answer: B) 105/103

Explanation:

As given equal amounts of alloys are melted, let it be 1 kg.

Required ratio of gold and silver = $\frac{\frac{5}{13} + \frac{5}{8}}{\frac{8}{13} + \frac{3}{8}} = \frac{105}{103} .$

Hence, ratio of gold and silver in the resulting alloy = 105/103.

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Filed Under: Alligation or Mixture
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Q:

When is genetic drift a major factor in evolution?

A) When there is male competition	B) When there is artificial selection
C) When there is no selective pressure	D) When there is disruptiveselection

Answer & Explanation Answer: C) When there is no selective pressure

Explanation:

Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.

When is genetic drift a major factor in evolution is

* When there is low gene flow.

* When there is no selective pressure.

* When there is a bottleneck.

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Filed Under: Biology
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Q:

Which of the following is considered a modified stem?

A) Tendril	B) Taproot
C) Petiole	D) Tuber

Answer & Explanation Answer: D) Tuber

Explanation:

Tuber is considered as a modified stem. These type of stems carry out special functions that are important for the plant to survive. Tubers serves as a food reserve and bearing buds wherein new plants can grow.

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Filed Under: Biology
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Q:

Rajesh rows in still water with a speed of 4.5 kmph to go to a certain place and comes back. Find his average speed for the whole journey, if the river is flowing with a speed of 1.5 kmph?

A) 2 kmph	B) 4 kmph
C) 6 kmph	D) 8 kmph

Answer & Explanation Answer: B) 4 kmph

Explanation:

Let the distance in one direction = k kms

Speed in still water = 4.5 kmph

Speed of river = 1.5

Hence, speed in upstream = 4.5 - 1.5 = 3 kmph

Speed in downstream = 4.5 + 1.5 = 6 kmph

Time taken by Rajesh to row upwards = k/3 hrs

Time taken by Rajesh to row downwards = k/6 hrs

Now, required Average speed = $\frac{Total distance}{Total speed} = \frac{2 k}{\frac{k}{3} + \frac{k}{6}} = \frac{2 k x 18}{6 k + 3 k} = 4 kmph$

Therefore, the average speed of the whole journey = 4kmph.

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Filed Under: Boats and Streams
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Q:

According to new federal data released, the US state whose economy has surpassed that of the UK to become the world’s fifth largest was

A) Massachusetts	B) Florida
C) Hawaii	D) California

Answer & Explanation Answer: D) California

Explanation:

The US state California's economy has surpassed that of the UK to become the world’s fifth largest, according to new federal data released.

With a GDP of $2.7 trillion, California is now only behind the US, China, Japan and Germany.

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Filed Under: General Awareness
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Q:

Who was the Roman Emperor when Jesus was crucified?

A) Augustus	B) Antonius Pius
C) Livia Drusilla	D) Tiberius

Answer & Explanation Answer: D) Tiberius

Explanation:

BIBLICAL_KINGS_2_(TIBERIUS)1525675084.jpg image

Tiberius Caesar was a Roman emperor from 14 AD to 37 AD. And Jesus was crucified in between 30 - 33AD.

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Filed Under: World History
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Q:

What is the interest rate per annum, if a sum of money invested at compound interest amount to Rs. 2400 in 3 years and in 4 years to Rs. 2,520?

A) 3.5%	B) 4%
C) 5%	D) 6.5%

Answer & Explanation Answer: C) 5%

Explanation:

Let 'R%' be the rate of interest

From the given data,

$\frac{2520}{2400} = \frac{{(1 + \frac{R}{100})}^{4}}{{(1 + \frac{R}{100})}^{3}} \Rightarrow (1 + \frac{R}{100}) = \frac{63}{60} \Rightarrow R = 5$

Hence, the rate of interest R = 5% per annum.

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Filed Under: Compound Interest
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